PORTLAND WSO CITY, OREGON

Monthly Average Temperature (Degrees Fahrenheit)

(356761)

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 197306
a = 1 day missing, b = 2 days missing, c = 3 days, ..etc..,
z = 26 or more days missing, A = Accumulations present
Long-term means based on columns; thus, the monthly row may not
sum (or average) to the long-term annual value.
MAXIMUM ALLOWABLE NUMBER OF MISSING DAYS : 5
Individual Months not used for annual or monthly statistics if more than 5 days are missing.
Individual Years not used for annual statistics if any month in that year has more than 5 days missing.
YEAR(S) JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
1928 38.61 44.22 50.81 51.42 62.56 62.23 69.00 67.50 61.53 54.71 46.48 40.15 54.10
1929 34.15 35.68 47.68 49.18 58.52 62.43 68.31 69.10 64.83 58.48 44.75 45.31 53.20
1930 28.08 46.30 50.31 55.78 55.03 62.20 66.66 69.89 63.67 53.73 46.03 40.47 53.18
1931 44.73 45.00 48.81 55.50 62.69 63.60 70.13 69.19 62.75 55.81 43.97 40.13 55.19
1932 39.74 41.47 47.92 53.35 57.61 65.83 65.76 68.05 65.53 57.11 49.33 38.11 54.15
1933 39.87 38.20 47.03 51.67 53.92 62.32 67.98 69.60 59.65 57.15 46.52 46.65 53.38
1934 46.90 49.41 55.23 59.75 61.45 64.08 66.98 69.47 62.77 57.35 50.30 44.10 57.32
1935 40.44 46.23 44.05 51.72 57.85 64.40 67.81 68.42 67.18 53.29 42.37 42.13 53.82
1936 44.15 33.90 45.32 55.55 61.23 65.17 67.77 69.53 63.47 58.68 45.53 43.73 54.50
1937 29.85 41.75 49.68 50.05 58.45 65.45 68.42 66.81 63.85 59.26 49.67 44.03 53.94
1938 41.39 43.36 46.90 54.37 59.42 64.87 71.02 66.23 67.48 57.24 44.85 43.66 55.06
1939 43.74 41.00 49.37 55.92 60.68 61.28 69.42 69.95 65.40 56.53 49.97 46.37 55.80
1940 42.21 47.19 51.82 55.32 62.60 67.48 68.95 70.47 65.60 58.68 44.25 43.98 56.55
1941 44.13 48.89 54.92 56.48 59.02 63.27 72.85 68.58 61.38 56.34 49.33 43.81 56.58
1942 36.61 44.20 47.98 54.20 57.37 62.35 70.97 70.15 65.50 57.48 46.37 44.26 54.79
1943 35.02 46.30 47.16 55.65 56.60 61.33 67.84 66.69 67.88 56.47 48.58 42.08 54.30
1944 41.23 44.10 47.29 52.58 59.02 62.55 68.50 67.52 66.63 60.11 47.13 40.42 54.76
1945 44.44 45.32 46.05 51.40 59.97 63.25 70.16 68.84 62.52 56.08 46.77 42.53 54.78
1946 42.56 44.59 47.56 52.83 61.23 61.85 68.74 68.32 63.07 52.45 45.42 43.82 54.37
1947 39.05 47.96 52.15 55.88 63.08 62.42 67.56 66.32 65.23 56.40 48.43 45.02 55.79
1948 41.55 42.38 46.08 49.55 57.16 66.48 66.71 65.65 62.95 55.19 45.17 a 39.27 a 53.18
1949 30.88 a 41.38 48.13 54.81 a 61.26 63.55 67.23 a 67.79 65.73 50.93 a 52.80 42.53 53.92
1950 29.37 41.93 46.19 50.75 56.84 63.35 68.20 a 70.79 64.17 53.37 47.72 48.18 53.40
1951 40.24 44.75 43.18 56.20 58.44 66.40 68.16 67.37 66.13 55.71 47.13 39.24 54.41
1952 37.60 42.53 45.95 54.30 59.03 61.23 69.77 68.95 67.15 62.03 42.97 43.73 54.60
1953 48.48 45.29 47.31 51.60 56.34 59.35 67.97 67.94 65.28 57.13 50.75 45.05 55.21
1954 40.32 44.82 45.56 51.18 58.76 59.22 64.34 64.39 62.18 55.55 51.50 42.47 53.36
1955 41.18 41.93 42.56 47.47 54.68 62.32 63.94 66.82 63.35 55.69 42.88 41.24 52.00
1956 42.70 a 37.43 45.77 54.73 61.32 60.70 69.50 a 67.63 63.88 53.61 45.78 42.15 a 53.77
1957 32.42 43.61 47.89 54.27 60.79 63.85 66.76 66.00 a 68.92 55.21 46.58 44.76 54.25
1958 45.74 50.43 47.32 52.65 64.19 66.52 72.63 71.90 64.73 59.18 47.57 46.50 57.45
1959 42.95 43.38 47.94 53.58 56.77 63.28 70.03 67.13 61.53 57.27 46.38 42.82 54.42
1960 36.87 a 43.15 f 46.77 52.80 55.55 64.25 70.53 66.15 63.78 56.65 48.18 41.02 54.78
1961 46.11 48.27 48.40 51.58 58.00 67.12 70.35 72.18 61.60 54.92 45.20 42.69 55.54
1962 39.73 44.12 46.34 53.53 53.76 62.40 67.22 a 66.90 64.97 56.40 50.00 45.35 54.23
1963 36.27 50.95 47.94 50.57 59.77 62.22 65.11 67.68 67.88 57.45 48.87 43.16 54.82
1964 44.29 44.79 47.10 50.02 56.03 61.17 ----- z 66.69 62.15 58.11 44.98 40.27 52.33
1965 42.44 45.45 50.76 54.13 55.85 62.73 70.23 69.53 62.82 59.08 50.63 40.79 55.37
1966 42.29 44.71 48.18 55.07 59.71 64.27 67.19 68.81 65.88 55.82 49.65 46.05 55.64
1967 45.71 46.29 45.89 49.28 59.45 67.38 70.58 74.97 68.67 57.10 49.67 43.10 56.51
1968 41.42 51.52 50.92 50.95 58.50 64.27 70.47 66.81 63.90 54.89 48.72 38.60 55.08
1969 34.02 43.04 50.05 52.22 62.26 67.25 67.55 66.95 64.07 54.24 48.53 44.27 54.54
1970 42.23 48.89 49.10 49.30 58.02 66.65 69.34 68.58 61.65 55.16 48.52 41.52 54.91
1971 41.90 44.29 45.39 51.98 58.42 60.70 69.58 71.76 62.33 53.74 46.82 40.94 53.99
1972 39.52 44.59 50.76 48.63 61.29 63.92 70.94 71.69 61.75 54.92 49.02 38.08 54.59
1973 39.95 46.48 48.24 53.42 60.03 63.68 ----- z ----- z ----- z ----- z ----- z ----- z 51.97
Period of Record Statistics
MEAN 40.07 44.41 47.99 52.90 58.92 63.54 68.62 68.48 64.30 56.28 47.38 42.77 54.67
S.D. 4.77 3.65 2.59 2.54 2.53 2.11 1.95 2.04 2.19 2.13 2.42 2.41 1.14
SKEW -0.80 -0.58 0.66 0.10 -0.08 0.19 -0.21 0.79 0.25 0.08 -0.06 -0.05 0.44
MAX 48.48 51.52 55.23 59.75 64.19 67.48 72.85 74.97 68.92 62.03 52.80 48.18 57.45
MIN 28.08 33.90 42.56 47.47 53.76 59.22 63.94 64.39 59.65 50.93 42.37 38.08 52.00
NO YRS 46 45 46 46 46 46 44 45 45 45 45 45 43